Grate



UNITED STAmTEs .PATENT OFFICE. I

JOSEPH COLLIN S, OF OONSHOHOCKEN, PENNSYLVANIA.

`GRATE.

sPEcIFIcArIoN forming part of Letters :Patent No.' 223,634, dated January 2o, 1880.

Application filed February 27, 1879.

To all whom it may concern Be it known that I, JOSEPH COLLINS, of Conshohocken, in the county of Montgomery and State ot' Pennsylvania, have invented a new and useful Improvement in Grates, which improvement is" fully set forth in the following specification and accompanying drawing, in which the figure is a face View of a grate formed ot' bars, embodying my invention, one of which is in horizontal section.

This invention consists in a grate composed of zigzag bars extending the whole length thereof, in combination with side bars, also extending the whole length of the grate, and provided with inwardly-extending V-shaped bars, the various bars ofthe grate being connected and braced by interposed blocks or lugs.

Referring t0 the drawing, A represents the 4grate-bar, which is constructed of a continuous zigzag throughout its entire or partial length. A number of the bars A are arranged parallel, and properly' supported to form a grate, and held separated the requisite extent by means of lugs a projecting from one or both y sides of the bars, and cast therewith.

It will be seen that the bar is lengthened, thus increasing the supporting-surface for the lire.

-The spaces between adjacent bars are lengthened, thus increasing the volume of air admit-ted to the lire, and the increased length of the bar permits a greater expansion of the metal, whereby the bars are prevented from warping and their durability increased.

B represents the side bars, which are formed to accord with the zigzag shape of the bars A, and with said bars are also formed inwardly-projectin g V-shaped pieces D, which, constructed with inwardly-projecting' V-shaped pieces O,

smaller than the pieces G, enter the spaces of 4o said pieces C. By this provision the bars B have aseres of double V-shaped pieces, which are properly separated to preserve the spacing of the grate, the weight ofthe lire is superiin- In a grate, the combination of zigzag bars A, arranged side by side and extending the whole length of the grate, with side bars, also extending the whole length of the grate, and provided with double V-shaped bars C and D, said bars A and B being separated from one another at each bend or angle by bracing blocks or lugs a, substantially as set forth.

JOSEPH COLLINS. Witnesses:

JOHN A. WIEDEESHEIM, A. P. GEANT. 

